Mitsubishi MELSEC-F FX2NC Series User Manual page 4

5.2.10 Terminal status [BFM #27]
Bit N0. Signal Name OFF (0) ON (1)
b0 PRESET input OFF ON
b1 DISABLE input OFF ON
b2 YH output OFF ON
b 3 YS output OFF ON
b 4 ~ b15 Not available
5.2.11 Error status [BFM #29]
Bit N0. Error Status
b0 Set when any of b1 to b7 is ON.
Set when the value of the ring length is written incorrectly.
b1
(Except K2 to K65,536)
Set when the preset value is written
b2
incorrectly.
When value ≥ ring length in
Set when the compare value is
b3
written incorrectly. 16-bit counter mode.
S et w hen the c urr ent v alue is
b4
written in correctly.
Set when the counter overflows the
b5
When the upper or lower limit
upper limit.
i s e x c e e d e d o n a 3 2 - b i t
Set when the counter overflows the
counter.
b6
lower limit.
b7 Set when the FROM/TO command is used incorrectly.
S e t w h e n t h e c o u n t e r m o d e
b8 Except K0 to K11
(BFM#0) is written incorrectly.
S et w h en t he B F M nu mb er i s
b9 Except K0 to K31
written incorrectly.
b10 ~ b15 Not available
Error status in the FX -1HC can be checked by reading the contents of b0 to b9
2NC
of BFM #29 to auxiliary relays of the PLC.
There error flags can be reset by b8 of BFM #4.
M8000
FNC 78
K2 K29 K3M100 K1
FROM
5.2.12 Model identification code [BFM #30]
This BFM stores the identification number for FX -1HC.
2NC
The identification number for the FX -1HC unit is K4010.
2N
By reading this identification number, the user may create built-in checking
routines to check whether the physical position of the FX -1HC matches to that
2NC
of the software.
6. Example Program
Please use the following program as a guide whenever you use the FX
unit. Other instructions to read the current value of the counter, status etc. can be
added as required.
M8002
FNC 79
K2 K0 K11 K1
TO
Initial
pulse
K11 is written into BFM #0 of special function block No.2. The
counter input is 16-bit 1-phase. Please use a pulse command for
this initialization.
FNC 79
K2 K2 K1234 K1
DTO
K1234 → BFM #3, #2 (special function block No.2)
The ring length can be specified when a 16-bit counter is specified.
FNC 79
K2 K1 K1 K1
TO
UP/DOWN direction should be specified for 1-phase 1-input
software determined UP/DOWN counter.
FNC 79
K2 K12 K1000 K1
DTO
K1000 → BFM #13, #12
Set the compare value for YH output.
FNC 79
K2 K14
DTO
K900 → BFM #15, #14
Set the compare value for YS output (not necessary if only YH output is
used).
Note that counting only occurs if count prohibit is OFF. Also, outputs will not be set from
the counting process at all if the relevant output prohibit are set in the command register.
Please reset the error flags and YH/YS output before you start. The mutual reset and
preset initialization commands can be used as required.
X010
M10 Count allowed
M8000
Output allowed,
M11 ~ M13
Mutual reset
X011
M14 Preset allowed
X012
PLS M18 Error flag reset
X013
PLS M19 YH output reset
PLS YS output reset
M20
M8000
FNC 79
K2 K4 K4M10
TO
RUN
monitor (M25 to M10) → BFM #4 (b15 to b0) command
FNC 78
K2 K20
DFROM
BFM (#21, #20) → Reads the current value to the data registers D3 and D2.
7. Preliminary checks
1) Check that the I/O wiring and extension cable of the FX
connected.
2) The FX -1HC occupies 8 points of I/O on the FX
2NC
The 8 points can be allocated from either inputs or outputs.
5V DC 90mA power is supplied from the main or extension power supply units
(FX only) for the FX -1HC. Check that there is no power overload from this
3UC 2NC
and other extension blocks.
3) The following derating curve shows the simultaneous ON ratio of available power
for products connected to the FX -1HC with respect to the ambient
2N C
temperature.
Use the adjoined following product within the simultaneous input ON ratio range
-1HC
2NC
shown in the figure.
Target input extension block:FX -16EX, FX
2NC 2NC
FX -32EX, FX
2NC 2NC
Derating curve: FX -16EX(-DS), FX -32EX(-DS)
2NC 2NC
Simultaneous ON ratio
Supply voltage:24V DC
100%
60%
45°C 55°C Ambient temperature
4) The counter works correctly only when data such as the counter mode (set with a
pulse command), the TO command, the compare value, etc. are appropriately
specified. Remember to initialize the count (BFM #4 b0), preset (BFM #4 b4), and
output (BFM #4 b2, b1) prohibits. Reset the YH/YS outputs before you start.
Note
Note that inputting the pulse higher than the maximum frequency may cause mis-
counting to FX -1HC or a FROM/TO error to the PLC main unit.
2NC
8. Diagnostics
STARTUP AND MAINTE-
NANCE PRECAUTIONS
K900 K1
• Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
* For repair, contact your local Mitsubishi Electric distributor.
• Do not drop the product or exert strong impact to it.
Doing so may cause damage.
DISPOSAL
PRECAUTIONS
• Please contact a certified electronic waste disposal company for the
environmentally safe recycling and disposal of your device.
TRANSPORT AND STOR-
AGE PRECAUTIONS
• The product is a precision instrument. During transportation, avoid any impacts.
Failure to do so may cause failures in the product.
After transportation, verify the operations of the product.
1) The following LEDs on the main panel of the FX
troubleshoot the unit.
a) φA, φB:
Goes on/off as φA, φB input turn ON/OFF. It can be checked by rotating the
encoder slowly.
b) UP, DN:
Lights up to indicate whether the counter is going up (UP) or down (DN).
c) PR, DS:
The appropriate LED lights up when the PRESET (PR) terminal or the
DISABLE (DS) terminal is ON.
d) YH, YS:
The appropriate LED lights up when YH/YS output is turned on.
K1
2) You can check the error status by reading the content of BFM #29 to the PLC.
→ For error contents, refer to the Subsection 5.2.11
9. System Block Diagram
D2 K1 Counter mode
BFM #0
T0
Ring upper limit value
BFM #3, #2
DOWN/UP command
BFM #1
2NC -1HC are properly
, FX expansion bus.
2NC 3UC
ØB
Count pulse
ØA
DISABLE
Count start
BFM #4 b0
-16EX-DS,
-32EX-DS
ØZ
PRESET
BFM#4 b4
T0
Preset data
BFM#11, #10
T0
Direct initialization
Model code
BFM #30
This manual confers no industrial property rights or any rights of any other kind,
nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be
held responsible for any problems involving industrial property rights which may
occur as a result of using the contents noted in this manual.
Warranty
Mitsubishi will not be held liable for damage caused by factors found not to be
the cause of Mitsubishi; opportunity loss or lost profits caused by faults in the
Mitsubishi products; damage, secondary damage, accident compensation
caused by special factors unpredictable by Mitsubishi; damages to products
other than Mitsubishi products; and to other duties.
• This product has been manufactured as a general-purpose part for general
industries, and has not been designed or manufactured to be incorporated in
a device or system used in purposes related to human life.
• Before using the product for special purposes such as nuclear power, electric
power, aerospace, medicine or passenger movement vehicles, consult with
Mitsubishi Electric.
•
This product has been manufactured under strict quality control. However
when installing the product where major accidents or losses could occur if the
product fails, install appropriate backup or failsafe functions in the system.
-1HC may help you to
2NC
HEAD OFFICE
HIMEJI WORKS
Reset
Error status
BFM #4 b8
BFM #29
16-bit counter
for YH output
T0
Comparisor data
BFM #13, #12
BFM #4 b1
1-phase
1-input
counter
Matched
DOWN/UP
for YS output
T0
Comparision data
BFM #15, #14
Counter
BFM #4 b2
16/32-bit
1-phase/2-phase
Matched
*1
Initiali-
zation
Current value
register
Sampling cycle
BFM #21, #20
300µs
Compare results
BFM #26
Maximum value
Terminal status
BFM #23, #22
BFM #27
Minimum value
BFM #25, #24
For safe use
: TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310,
JAPAN
: 840, CHIYODA CHO, HIMEJI, JAPAN
BFM #4 b11
S YH
BFM #4 b9
R BFM #4 b3
BFM #4 b12
S YS
R
BFM #4 b10
*1 Comparison is made at the next
sampling point after an input
count.